Hey A Stone Crying Out!
I'd be happy to share what our family is learning.
The "good news" is firstly, and in one word, a message.
Apparently the Greek word Euaggelion (Evangelion in Latin) conveyed the understanding of a victory message delivered on the battlefield.
In this case a legal and spiritual battlefield.
The message is about the legal defeat of sin, sickness, suffering, death, religion and our evil step-father Satan the Devil (by means of Jesus' death and the corresponding ransom price paid thereby).
The "unabridged gospel" or "full good news" is God's ultimate answer to religion and its messages surreptitiously published in Eden.
The messages of death, enmity, bondage and decay were surreptitiously published in Eden by Satan when encouraging Adam and Eve to relate to God on alternate terms (religion).
God responded by publishing the competing messages of salvation, reconciliation (atonement), liberation (deliverance), and restoration.
The central message or theme of the Bible is the legal custody battle between our evil step-father and our heavenly father by means of religion versus the "unabridged gospel".
This battle is articulated in numerous iterations such as "self-righteousness" versus "imputed righteousness" (justification).
"Whitewashing graves" and "cleaning the outside of the cup" versus "imputed holiness" (sanctification).
Navigation by "legalism" (rule-making and rule-keeping) instead of by "circumcision of the heart", by love, and by Holy Spirit.
Navigation by "moralism" (an external written moral code) instead of by "circumcision of the heart", by love, and by Holy Spirit.
Ethnocentric unity in doctrine, versus unity in Christ.
Knowledge instead of relationship (knowing intimately).
Law versus grace.
Faith versus works.
Numerous further ingredients of the "unabridged gospel" are woven throughout scripture - hidden in plain sight. A start at uncovering them can be made by marking all the occurrences of the phrase "good news" or the word "gospel" in ones Bible.
Jesus' birth, incarnation, death, burial, resurrection, ascension and all the implications and shadows are all key ingredients and part of the rich multi-faceted gospel message (1 Cor 15).
In summary the gospel was revealed to Abraham in the form of the eternal Abrahamic Covenant. The "Old Testament" or Covenant, and the "New Testament" or Covenant were/are time and context sensitive expressions of the eternal Abrahamic Covenant.
The "good news about the Christ" and the "good news about the Kingdom" are two distinct major components of the gospel (Acts 8:12).
In his 2010 book "What is the Gospel" Greg Gilbert defines the Kingdom as: "God's [eternal, victorious and] redemptive rule, reign and authority over those redeemed by Christ." (paraphrased)
The "unabridged gospel" is not discovered or apprehended by intellect, but revealed by Holy Spirit to those whom the father chooses - often those rejected by Pharisees (the ruling religious clergy class).
Those following a "Christian" religion get to know about Jesus through middlemen. They remain passive in spiritual bondage and blind to the full "unabridged gospel" and all its rich implications and powerfully transformative opportunities.
Ordinary persons (the so called laity class) following the unabridged gospel to its zenith, get to know Jesus personally and directly. As such they readily and naturally refer to, and see him as "my Lord", "my saviour", "my redeemer", "my atoner/reconciler", "my liberator/deliverer", "my high-priest", "my older brother", "my restorer" and more...
Watchtower religionists follow one of the worst depleted or truncated gospels around. First the "good news about the Christ" is removed. Then the "good news of the Kingdom" is truncated down to the "message of restoration". Then the present spiritual dimensions are removed. What remains is the "future restoration of physical paradise on earth".
Ask any Watchtower religionist and so called "publisher of the good news' what the "good news" is. They might explain doctrinal issues such as trinity, hellfire and immortality of the soul. Alternatively they may attempt to explain Matt 24:14. However they will not refer to the "good news" according to Paul. Yet more than half their own Bible's 152-odd references to (the) "good news" are by Paul!
If a Watchtower religionist was asked to explain the gospel in one word you likely would get a blank stare. If they are asked to explain the "good news" in one word they likely would say "kingdom". Once they are aware that Paul refers to (the) "good news" around 85 times, ask them how many times Paul refers to "good news" and "kingdom" in the same sentence. They should be shocked and perplexed at the answer - zero times!
